here are a few more pics with the bushing in place and the support stut reinstalled

i added pics of the second gearbox converted

for those with the metal gearboxes this is easy to do as you already have the one gear you need from your old plastic box and it will perform perfectly even though it is plastic as there will be no stress at all on this gear the stress is further up the gear train you need a drill and a 15/64 drill to put the bushings in and a 9/64 drill to put the cross rode back in

when drilling the gear box housing play it smart remove everything from the housing bolt the 2 haves together and drill the ho;es all at once to maintaine the squaeness of the holes